Table 1.
General clinicopathological data, n (%)
| Variable | All patients (n = 1608) | Training set (n = 1104) | Testing set (n = 504) |
| Age (yr) | |||
| < 57 | 593 (36.9) | 413 (37.4) | 180 (35.7) |
| 57-74 | 838 (52.1) | 565 (51.2) | 273 (54.2) |
| > 74 | 177 (11.0) | 126 (11.4) | 51 (10.1) |
| Sex | |||
| Female | 412 (25.6) | 299 (27.1) | 113 (22.4) |
| Male | 1196 (74.4) | 805 (72.9) | 391 (77.6) |
| BMI | |||
| < 18.5 | 156 (9.7) | 98 (8.9) | 58 (11.5) |
| 18.5-23.5 | 960 (59.7) | 670 (60.7) | 290 (57.5) |
| > 23.5 | 492 (30.6) | 336 (30.4) | 156 (31.0) |
| CEA | |||
| < 2.8 | 932 (58.0) | 626 (56.7) | 306 (60.7) |
| 2.8-4.8 | 328 (20.4) | 226 (20.5) | 102 (20.2) |
| > 4.8 | 348 (21.6) | 252 (22.8) | 96 (19.0) |
| CA199 | |||
| < 15.0 | 1043 (64.9) | 696 (63.0) | 347 (68.8) |
| 15.0-39.2 | 348 (21.6) | 255 (23.1) | 93 (18.5) |
| > 39.2 | 217 (13.5) | 153 (13.9) | 64 (12.7) |
| AFP | |||
| < 2 | 496 (30.8) | 344 (31.2) | 152 (30.2) |
| 2-5.29 | 916 (57.0) | 631 (57.2) | 285 (56.5) |
| > 5.3 | 196 (12.2) | 129 (11.7) | 67 (13.3) |
| NLR | |||
| < 1.91 | 632 (39.3) | 422 (38.2) | 210 (41.7) |
| 1.91-3.87 | 753 (46.8) | 525 (47.6) | 228 (45.2) |
| > 3.87 | 223 (13.9) | 157 (14.2) | 66 (13.1) |
| PLR | |||
| < 89.5 | 258 (16.0) | 177 (16.0) | 81 (16.1) |
| 89.5-162.3 | 777 (48.3) | 540 (48.9) | 237 (47.0) |
| >162.3 | 573 (35.6) | 387 (35.1) | 186 (36.9) |
| AGR | |||
| < 6.59 | 474 (29.5) | 332 (30.1) | 142 (28.2) |
| 6.59-7.81 | 612 (38.1) | 426 (38.6) | 186 (36.9) |
| > 7.81 | 522 (32.5) | 346 (31.3) | 176 (34.9) |
| PNI | |||
| < 371 | 495 (30.8) | 347 (31.4) | 148 (29.4) |
| 371-430 | 771 (47.9) | 531 (48.1) | 240 (47.6) |
| > 430 | 342 (21.3) | 226 (20.5) | 116 (23.0) |
| ASA | |||
| I | 983 (61.1) | 677 (61.3) | 306 (60.7) |
| II | 561 (34.9) | 379 (34.3) | 182 (36.1) |
| III-IV | 64 (4.0) | 48 (4.3) | 16 (3.2) |
| Comorbidity | |||
| No | 1133 (70.5) | 779 (70.6) | 354 (70.2) |
| Yes | 475 (29.5) | 325 (29.4) | 150 (29.8) |
| Primary site | |||
| Lower | 671 (41.7) | 476 (43.1) | 195 (38.7) |
| Middle | 350 (21.8) | 231 (20.9) | 119 (23.6) |
| Upper | 401 (24.9) | 257 (23.3) | 144 (28.6) |
| Overlapping | 186 (11.6) | 140 (12.7) | 46 (9.1) |
| Tumor size (mm) | |||
| < 30 | 578 (35.9) | 404 (36.6) | 174 (34.5) |
| 30-60 | 711 (44.2) | 477 (43.2) | 234 (46.4) |
| > 60 | 319 (19.8) | 223 (20.2) | 96 (19.0) |
| cT | |||
| T1 | 167 (10.4) | 108 (9.8) | 59 (11.7) |
| T2 | 185 (11.5) | 135 (12.2) | 50 (9.9) |
| T3 | 429 (26.7) | 292 (26.4) | 137 (27.2) |
| T4 | 827 (51.4) | 569 (51.5) | 258 (51.2) |
| cN | |||
| N0 | 662 (41.2) | 457 (41.4) | 205 (40.7) |
| N1 | 376 (23.4) | 257 (23.3) | 119 (23.6) |
| N2 | 362 (22.5) | 245 (22.2) | 117 (23.2) |
| N3 | 208 (12.9) | 145 (13.1) | 63 (12.5) |
| Follow-up duration (mo) | 48 (3-91) | 48 (3-91) | 50 (3-89) |
BMI: Body mass index; CEA: Carcinoembryonic antigen; CA199: Carbohydrate antigen 19-9; AFP: Alpha fetoprotein; NLR: Neutrophil-lymphocyte ratio; PLR: Platelet-lymphocyte ratio; AGR: Albumin-globulin ratio; PNI: Prognostic nutrition index; ASA: American society of anesthesiologists; cT: Clinical T stage; cN: Clinical N stage.